Oracle multiple PL/SQL injection vulnerabilities (#NISR2122004H)


NGSSoftware Insight Security Research Advisory Name: Oracle 10g/9i Multiple PL/SQL injection vulnerabilities Systems Affected: Oracle 10g/AS on all operating systems Severity: High risk Vendor URL: http://www.oracle.com/ Author: David Litchfield [ davidl at ngssoftware.com ] Relates to: http://www.nextgenss.com/advisories/oracle-01.txt Date of Public Advisory: 23rd December 2004 Advisory number: #NISR2122004H Advisory URL: http://www.ngssoftware.com/advisories/oracle23122004H.txt Description *********** Oracle 10g and 9i suffer from multiple PL/SQL injection vulnerabilities. Details ******* When a PL/SQL procedure executes, it does so with the permissions of the definer unless the AUTHID CURRENT USER keyword has been specified. In this case the procedure executes with invoker privileges. Any procedure that uses definer rights can be abused to gain elevated privileges if they are vulnerable to PL/SQL injection. Known to be vulnerable are Owner Procedure SYS DBMS_EXPORT_EXTENSION WKSYS WK_ACL.GET_ACL WKSYS WK_ACL.STORE_ACL WKSYS WK_ADM.COMPLETE_ACL_SNAPSHOT WKSYS WK_ACL.DELETE_ACLS_WITH_STATEMENT CTXSYS DRILOAD.VALIDATE_STMT Each of these can be exploited to gain DBA privileges. Further, attacks can be affected via an Oracle Application Server without the attacker having a user ID and password. Note - CTXSYS is not a DBA in 10g but is on 9i. Fix Information *************** A patch (#68) was released for this problem by Oracle. See http://metalink.oracle.com/ for more details. NGSSQuirreL for Oracle (http://www.nextgenss.com/squirrelora.htm), can be used to assess whether your Oracle servers are vulnerable to this. About NGSSoftware ***************** NGSSoftware design, research and develop intelligent, advanced application security assessment scanners. Based in the United Kingdom, NGSSoftware have offices in the South of London and the East Coast of Scotland. NGSSoftware's sister company NGSConsulting, offers best of breed security consulting services, specialising in application, host and network security assessments. http://www.ngssoftware.com/ Telephone +44 208 401 0070 Fax +44 208 401 0076 enquiries@ngssoftware.com